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Sac Spiders

pestcontrolsydneysacspider

 

 

Sac spiders can be found throughout Australia mostly in forest and grassland habitats and have been given the name sac spider because of the kind of silken sac in which they lay their eggs.

Scientific Name

Cheiracanthium gilvum/ Clubiona sp

 

Classification

Family: Clubionidae

Suborder: Araneomorphae

Order: Araneae

Class: Arachnida

Phylum: Arthropoda

Kingdom: Animalia

Identification

  • Yellow to fawn in colour
  • May have dark markings on the body
  • Cephalothorax and legs pale brown
  • Small, stout-bodied spiders 
  • Long slender legs
  • Male has enlarged jaws
  • Slow movers
  • 5-10mm in length

Habitat

  • Does not build a web
  • hunters on foliage in bush and garden
  • make sacs in folded leaves or grass blade
  • May enter houses
  • If inside they may build sacs on ceiling corners
  • Most common under bark and leaf litter
  • cylindrical or ovoid silk retreat sacs

Lifecycle

  • Eggs are laid and stored inside the retreat sac
  • The female guards the sacs from predators.

Bites

May cause:

  • Redness
  • Itchiness
  • Burning sensation
  • Dizziness
  • Tiredness
  • Sweating
  • Strong persistent unilateral pain
  • Swelling
  • Headache
  • Nausea
  • Rapid pulse
  • Ulceration
  • Coma